dr Sergi López-Torres

@article{https://doi.org/10.1002/ar.25420,

title = {Dental caries in living and extinct strepsirrhines with insights into diet},

author = {Keegan R. Selig and Sergi López-Torres and Anne M. Burrows and Mary T. Silcox and Jin Meng},

url = {https://anatomypubs.onlinelibrary.wiley.com/doi/abs/10.1002/ar.25420},

doi = {https://doi.org/10.1002/ar.25420},

year  = {2024},

date = {2024-03-11},

urldate = {2024-03-11},

journal = {The Anatomical Record},

number = {1-12},

abstract = {Abstract Dental caries is one of the most common diseases afflicting modern humans and occurs in both living and extinct non-human primates, as well as other mammalian species. Compared to other primates, less is known about the etiology or frequency of caries among the Strepsirrhini. Given the link between caries and diet, caries frequency may be informative about the dietary ecology of a given animal. Understanding rates of caries in wild populations is also critical to assessing dental health in captive populations. Here, we examine caries frequency in a sample of 36 extant strepsirrhine species (n = 316 individuals) using odontological collections of wild-, non-captive animals housed at the American Museum of Natural History by counting the number of specimens characterized by the disease. Additionally, in the context of studying caries lesions in strepsirrhines, case studies were also conducted to test if similar lesions were found in their fossil relatives. In particular, two fossil strepsirrhine species were analyzed: the earliest Late Eocene Karanisia clarki, and the subfossil lemur Megaladapis madagascariensis. Our results suggest that caries affects 13.92% of the extant individuals we examined. The frugivorous and folivorous taxa were characterized by the highest overall frequency of caries, whereas the insectivores, gummivores, and omnivores had much lower caries frequencies. Our results suggest that caries may be common among wild populations of strepsirrhines, and in fact is more prevalent than in many catarrhines and platyrrhines. These findings have important implications for understanding caries, diet, and health in living and fossil taxa.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{https://doi.org/10.1111/pala.12650,

title = {Cranial endocast of Anagale gobiensis (Anagalidae) and its implications for early brain evolution in Euarchontoglires},

author = {Sergi López-Torres and Ornella C. Bertrand and Madlen M. Lang and Łucja Fostowicz-Frelik and Mary T. Silcox and Jin Meng},

url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/pala.12650},

doi = {https://doi.org/10.1111/pala.12650},

year  = {2023},

date = {2023-06-01},

urldate = {2023-06-01},

journal = {Palaeontology},

volume = {66},

number = {3},

pages = {e12650},

abstract = {Abstract Anagalids are an extinct group of primitive mammals from the Asian Palaeogene thought to be possible basal members of Glires. Anagalid material is rare, with only a handful of crania known. Here we describe the first virtual endocast of an anagalid, based on the holotype of Anagale gobiensis (AMNH 26079; late Eocene, China), which allows for comparison with published endocasts from fossil members of modern euarchontogliran lineages (i.e. primates, rodents, lagomorphs). The endocast displays traits often observed in fossorial mammals, such as relatively small petrosal lobules and a low neocortical ratio, which would be consistent with previous inferences about use of subterranean food sources based on heavy dental wear. In fact, Anagale gobiensis has the lowest neocortical ratio yet recorded for a euarchontogliran. This species was olfaction-driven, based on the relatively large olfactory bulbs and laterally expansive palaeocortex. The endocast supports previous inferences that relatively large olfactory bulbs, partial midbrain exposure and low encephalization quotient are ancestral for Euarchontoglires, although the likely fossorial adaptations of Anagale gobiensis may also partly explain these traits. While Anagale gobiensis is a primitive mammal in many aspects, some of its derived endocranial traits point towards a new, different trajectory of brain evolution within Euarchontoglires.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{LopezE&E2023,

title = {Locomotor behavior and hearing sensitivity in an early lagomorph reconstructed from the bony labyrinth},

author = {Sergi López-Torres and Raj Bhagat and Ornella C. Bertrand and Mary T. Silcox and Łucja Fostowicz-Frelik},

url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/ece3.9890},

doi = {https://doi.org/10.1002/ece3.9890},

year  = {2023},

date = {2023-03-18},

urldate = {2023-03-18},

journal = {Ecology and Evolution},

volume = {13},

number = {3},

pages = {e9890},

abstract = {Abstract The structure of the bony labyrinth is highly informative with respect to locomotor agility (semicircular canals [SCC]) and hearing sensitivity (cochlear and oval windows). Here, we reconstructed the agility and hearing sensitivity of the stem lagomorph Megalagus turgidus from the early Oligocene of the Brule Formation of Nebraska (USA). Megalagus has proportionally smaller SCCs with respect to its body mass compared with most extant leporids but within the modern range of variability, suggesting that it was less agile than most of its modern relatives. A level of agility for Megalagus within the range of modern rabbits is consistent with the evidence from postcranial elements. The hearing sensitivity for Megalagus is in the range of extant lagomorphs for both low- and high-frequency sounds. Our data show that by the early Oligocene stem lagomorphs had already attained fundamentally rabbit-like hearing sensitivity and locomotor behavior, even though Megalagus was not a particularly agile lagomorph. This is likely because Megalagus was more of a woodland dweller than an open-habitat runner. The study of sensory evolution in Lagomorpha is practically unknown, and these results provide first advances in understanding the primitive stages for the order and how the earliest members of this clade perceived their environment.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{scott2023new,

title = {New paromomyids (Mammalia, Primates) from the Paleocene of southwestern Alberta, Canada, and an analysis of paromomyid interrelationships},

author = {Craig S Scott and Sergi López-Torres and Mary T Silcox and Richard C Fox},

url = {https://www.cambridge.org/core/journals/journal-of-paleontology/article/new-paromomyids-mammalia-primates-from-the-paleocene-of-southwestern-alberta-canada-and-an-analysis-of-paromomyid-interrelationships/85328AE223A9AE66A2948F6FB06712CD},

year  = {2023},

date = {2023-01-01},

urldate = {2023-01-01},

journal = {Journal of Paleontology},

pages = {1--22},

publisher = {Cambridge University Press},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{grau2022miopetaurista,

title = {A Miopetaurista (Rodentia, Sciuridae) cranium from the Middle Miocene of Bavaria (Germany) and brain evolution in flying squirrels},

author = {Montserrat Grau-Camats and Ornella C Bertrand and Jérome Prieto and Sergi López-Torres and Mary T Silcox and Isaac Casanovas-Vilar},

doi = {10.1002/spp2.1454},

year  = {2022},

date = {2022-07-25},

journal = {Papers in Palaeontology},

volume = {8},

number = {4},

pages = {e1454},

publisher = {Wiley Online Library},

abstract = {Flying squirrels (Sciurinae, Pteromyini) are the most successful group of gliding mammals. However, their fossil record mostly consists of isolated dental remains that provide very limited insights into their palaeobiology and evolution. The first skeleton of a fossil flying squirrel, belonging to the species Miopetaurista neogrivensis, has been described only recently. It presents all the diagnostic gliding-related postcranial features of its extant relatives and shows that this group has undergone very little morphological change for almost 12 myr. However, the associated cranium is badly crushed, and particular details of the cranial morphology cannot be described. Here, we describe a well-preserved cranium of the closely related Miopetaurista crusafonti from 12.5–12.0 Ma from Bavaria (Germany). Its cranial morphology is found to be almost identical to extant large flying squirrels, even in details such as the position of the foramina. The virtual endocast also shows close affinities to living large flying squirrels in morphology and in the relative volume of different brain regions, showing diagnostic features such as the size reduction of petrosal lobules and olfactory bulbs. However, the encephalization quotient (EQ) and neocortical ratio are lower than observed in extant flying squirrels. EQ is known to increase through time in squirrels, but might also be related to locomotion, given that arboreal and gliding squirrels display higher EQs than terrestrial ones. Because Miopetaurista was certainly a glider, its comparatively lower EQ and neocortical size support the existence of an independent trend of increasing EQ and neocortical complexity in this flying squirrel subclade.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{kraatz2021lagomorpha,

title = {Lagomorpha as a model morphological system},

author = {Brian Kraatz and Rafik Belabbas and Lucja A Fostowicz-Frelik and Deyan Ge and Alexander N Kuznetsov and Madlen Lang and Sergi López-Torres and Zeinolabedin Mohammadi and Rachel A Racicot and Matthew J Ravosa and others},

year  = {2021},

date = {2021-01-01},

urldate = {2021-01-01},

journal = {Frontiers in Ecology and Evolution},

volume = {9},

pages = {366},

publisher = {Frontiers},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{fostowicz2021tarsal,

title = {Tarsal morphology of ischyromyid rodents from the middle Eocene of China gives an insight into the group’s diversity in Central Asia},

author = {Lucja Fostowicz-Frelik and Sergi López-Torres and Qian Li},

year  = {2021},

date = {2021-01-01},

urldate = {2021-01-01},

journal = {Scientific reports},

volume = {11},

number = {1},

pages = {1-11},

publisher = {Nature Publishing Group},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{schillaci2021linguistic,

title = {Linguistic Clues to Kiowa-Tanoan Prehistory},

author = {Michael A Schillaci and Logan D Sutton and Søren Wichmann and Sergi López-Torres},

year  = {2021},

date = {2021-01-01},

urldate = {2021-01-01},

journal = {Journal of the Southwest},

volume = {63},

number = {2},

pages = {255--368},

publisher = {The Southwest Center, University of Arizona},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{selig2020novel,

title = {A novel method for assessing enamel thickness distribution in the anterior dentition as a signal for gouging and other extractive foraging behaviors in gummivorous mammals},

author = {Keegan R Selig and Sergi López-Torres and Adam Hartstone-Rose and Leanne T Nash and Anne M Burrows and Mary T Silcox},

year  = {2020},

date = {2020-01-01},

urldate = {2020-01-01},

journal = {Folia Primatologica},

volume = {91},

number = {4},

pages = {365-384},

publisher = {Karger Publishers},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{lopez2020cranial,

title = {Cranial endocast of the stem lagomorph Megalagus and brain structure of basal Euarchontoglires},

author = {Sergi López-Torres and Ornella C Bertrand and Madlen M Lang and Mary T Silcox and Lucja Fostowicz-Frelik},

year  = {2020},

date = {2020-01-01},

urldate = {2020-01-01},

journal = {Proceedings of the Royal Society B},

volume = {287},

number = {1929},

pages = {20200665},

publisher = {The Royal Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{burrows2020dental,

title = {Dental signatures for exudativory in living primates, with comparisons to other gouging mammals},

author = {Anne M Burrows and Leanne T Nash and Adam Hartstone-Rose and Mary T Silcox and Sergi López-Torres and Keegan R Selig},

year  = {2020},

date = {2020-01-01},

urldate = {2020-01-01},

journal = {The Anatomical Record},

volume = {303},

number = {2},

pages = {265-281},

publisher = {Wiley Online Library},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{selig2019first,

title = {First 3D dental topographic analysis of the enamel-dentine junction in non-primate euarchontans: Contribution of the enamel-dentine junction to molar morphology},

author = {Keegan R Selig and Sergi López-Torres and Eric J Sargis and Mary T Silcox},

year  = {2019},

date = {2019-01-01},

urldate = {2019-01-01},

journal = {Journal of Mammalian Evolution},

volume = {26},

number = {4},

pages = {587-598},

publisher = {Springer},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{lopez2018newb,

title = {A new Eocene anagalid (Mammalia: Euarchontoglires) from Mongolia and its implications for the group’s phylogeny and dispersal},

author = {Sergi López-Torres and Łucja Fostowicz-Frelik},

year  = {2018},

date = {2018-09-17},

urldate = {2018-01-01},

journal = {Scientific Reports},

volume = {8},

number = {1},

pages = {13955},

publisher = {Nature Publishing Group UK London},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{lopez2018new,

title = {New omomyoids (Euprimates, Mammalia) from the late Uintan of southern California, USA, and the question of the extinction of the Paromomyidae (Plesiadapiformes, Primates)},

author = {Sergi López-Torres and Mary T Silcox and Patricia A Holroyd},

year  = {2018},

date = {2018-09-01},

urldate = {2018-09-01},

journal = {Palaeontologia Electronica},

volume = {21},

number = {3},

publisher = {COQUINA PRESS C/O WHITEY HAGADORN, EXECUTIVE EDITOR, AMHERST COLLEGE, DEPT~…},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{10.1017/jpa.2018.10,

title = {The European Paromomyidae (Primates, Mammalia): taxonomy, phylogeny, and biogeographic implications},

author = {Sergi López-Torres and Mary T. Silcox},

url = {https://doi.org/10.1017/jpa.2018.10},

doi = {10.1017/jpa.2018.10},

issn = {0022-3360},

year  = {2018},

date = {2018-05-09},

urldate = {2018-01-01},

journal = {Journal of Paleontology},

volume = {92},

number = {5},

pages = {920-937},

abstract = {Plesiadapiforms represent the first radiation of Primates, appearing near the Cretaceous-Paleogene boundary. Eleven families of plesiadapiforms are recognized, including the Paromomyidae. Four species of paromomyids from the early Eocene have been reported from Europe: Arcius fuscus Russell et al., 1967, Arcius lapparenti Russell et al., 1967, and Arcius rougieri Godinot, 1984 from France and Arcius zbyszewskii Estravís, 2000 from Portugal. Other Arcius specimens from the early Eocene are known from Masia de l’Hereuet (Spain), Abbey Wood (England), and Sotteville-sur-Mer (Normandy, France). A cladistic analysis of the European paromomyids has never previously been published. A total of 53 dental characters were analyzed for the four Arcius species and the specimens from Spain, England, and Normandy. The results of a parsimony analysis using TNT agree with previous conceptions of A. zbyszewskii as the most primitive member of the genus. Consistent with existing hypotheses, Arcius rougieri is positioned as the sister taxon of A. fuscus and A. lapparenti, and the results suggest that the fossil from Normandy is A. zbyszewskii. However, the English fossil pertains to a primitive lineage, rather than grouping with A. lapparenti as had been suggested; as such it is recognized here as a distinct species (Arcius hookeri new species). The Spanish fossils cluster together with the French species but do not show the previously proposed special relationship with A. lapparenti and are sufficiently distinct to be placed in a new species (Arcius ilerdensis). Arcius is recovered as monophyletic, which is consistent with a single migration event from North America to Europe around the earliest Eocene through the Greenland land bridge.UUID: http://zoobank.org/f4aac438-82d2-4a25-887b-3e0c072d87f6},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{lopez2018dental,

title = {Dental topographic analysis of paromomyid (Plesiadapiformes, Primates) cheek teeth: more than 15 million years of changing surfaces and shifting ecologies},

author = {Sergi López-Torres and Keegan R Selig and Kristen A Prufrock and Derrick Lin and Mary T Silcox},

year  = {2018},

date = {2018-01-01},

urldate = {2018-01-01},

journal = {Historical Biology},

volume = {30},

number = {1-2},

pages = {76--88},

publisher = {Taylor & Francis},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{silcox2017major,

title = {Major questions in the study of primate origins},

author = {Mary T Silcox and Sergi López-Torres},

year  = {2017},

date = {2017-05-24},

urldate = {2017-01-01},

journal = {Annual Review of Earth and Planetary Sciences},

volume = {45},

pages = {113-137},

publisher = {Annual Reviews},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{silcox2017evolutionary,

title = {The evolutionary radiation of plesiadapiforms},

author = {Mary T Silcox and Jonathan I Bloch and Doug M Boyer and Stephen GB Chester and Sergi López-Torres},

year  = {2017},

date = {2017-04-21},

urldate = {2017-01-01},

journal = {Evolutionary Anthropology: Issues, News, and Reviews},

volume = {26},

number = {2},

pages = {74-94},

publisher = {Wiley Online Library},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Prufrock_2016,

title = {Surfaces and spaces: troubleshooting the study of dietary niche space overlap between North American stem primates and rodents},

author = {Kristen A. Prufrock and Sergi López-Torres and Mary T. Silcox and Doug M. Boyer},

url = {https://dx.doi.org/10.1088/2051-672X/4/2/024005},

doi = {10.1088/2051-672X/4/2/024005},

year  = {2016},

date = {2016-03-10},

urldate = {2016-03-10},

journal = {Surface Topography: Metrology and Properties},

volume = {4},

number = {2},

pages = {024005},

publisher = {IOP Publishing},

abstract = {Dental topographic metrics provide quantitative, biologically meaningful data on the three-dimensional (3D) form of teeth. In this study, three dental topographic metrics (Dirichlet normal energy (DNE), relief index (RFI), and orientation patch count rotated (OPCR)) are used to evaluate the presence of dietary niche overlap between North American plesiadapoid primates (Plesiadapidae, Carpolestidae, and Saxonellidae) and early rodents. Calculation of these metrics requires researchers to modify the 3D surface models of the teeth by cropping them to a region of interest and/or orienting them. The current study therefore also examines the error introduced by cropping and orientation, and evaluates the contribution of these metrics to the niche overlap hypothesis. Our results indicate that cropping creates significantly more variation in RFI than DNE. Furthermore, orientation is an even larger source of variation in the calculation of RFI than cropping. Orientation does not strongly influence OPCR values. However, none of these sources of error are significant enough to undermine the extent to which these metrics can speak to the niche overlap hypothesis. The DNE and RFI results suggest that carpolestids and saxonellids had very different molar morphologies from early rodents, and thus these groups were not adapted to consume the same resources. Some plesiadapids show similar levels of occlusal curvature, relief, and complexity to early rodents. The plesiadapid Chiromyoides, which has distinctively low cusps and weak shearing crest development, has molars that are the most rodent-like of all taxa compared. This suggests that Chiromyoides had a dietary niche that overlapped with early rodents and would have been the most likely to be competing over food resources. Results from the plesiadapoid-rodent dental topographic analysis highlight the utility of DNE for detecting more fine-scaled differences in occlusal surface morphology than OPCR, whereas RFI provided valuable data on the degree to which teeth were high crowned.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{lopez2015life,

title = {Life history of the most complete fossil primate skeleton: exploring growth models for Darwinius},

author = {Sergi López-Torres and Michael A Schillaci and Mary T Silcox},

year  = {2015},

date = {2015-01-01},

urldate = {2015-01-01},

journal = {Royal Society open science},

volume = {2},

number = {9},

pages = {150340},

publisher = {The Royal Society Publishing},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{marigo2012first,

title = {First record of Plesiadapiformes (Primates, Mammalia) from Spain},

author = {Judit Marigó and Raef Minwer-Barakat and Salvador Moyà-Solà and Sergi López-Torres},

year  = {2012},

date = {2012-01-01},

urldate = {2012-01-01},

journal = {Journal of Human Evolution},

volume = {62},

number = {3},

pages = {429-433},

publisher = {Academic Press},

keywords = {},

pubstate = {published},

tppubtype = {article}

}